Harm van der Lek is one of the founding fathers of FCO-IM. Encouraged by Professor Guido Bakema to use NIAM in practice, Harm found an elegant way to enhance it into FCO-IM. After that Harm has been involved in many Data Warehouse projects and build automation tools for them. A bundle of his columns is available in a book called 'Sterren en Dimensies'. He teaches about temporal aspects of data in several courses per year.